CV

Education

• PhD in Economic History, LSE, in progress
• MPhil in Sociology and Demography, University of Oxford, 2023
• BA in Human Sciences, University of Oxford, 2021

Academic positions

• Oslo Metropolitan University
  • Research Fellow (Forsker III), Centre for Pandemics & Society (PANSOC), 2024

Teaching positions

• University of Oxford
  • Instructor for “Demography and Population” (BA Human Sciences & BA Philosophy, Politics, and Economics), 2022–
  • Instructor for “Introduction to Demography” (BA Human Sciences), 2023

Publications

1. Gaddy, H., & Gargiulo, M. (2025). Can we estimate crisis death tolls by subtracting total population estimates? A critical review and appraisal. Demographic Research, 52: 741–796. doi:10.4054/DemRes.2025.52.23
2. Gaddy, H., & Mølbak Ingholt, M. (2024). Did the 1918 pandemic cause a 1920 baby boom? Demographic evidence from neutral Europe. Population Studies, 78: 269–287. doi:10.1080/00324728.2023.2192041
3. Gaddy, H. (2021). Social distancing and influenza mortality in 1918 did not increase suicide rates in the United States. SSM – Population Health, 6: 100944. doi:10.1016/j.ssmph.2021.100944
4. Gaddy, H. (2021). A decade of TFR declines suggests no relationship between development and sub-replacement fertility rebounds. Demographic Research 44: 125–142. doi:10.4054/DemRes.2021.44.5
5. Gaddy, H. (2020). Brexit and the geography of depression. Social Science & Medicine 264: 113276. doi:10.1016/j.socscimed.2020.113276
6. Gaddy, H. (2020). Using local knowledge in emerging infectious disease research. Social Science & Medicine 258: 113107. doi:10.1016/j.socscimed.2020.113107

Awards

• LSE PhD Studentship, London School of Economics, 2023–28
• Roger Schofield Award for Best Paper by a Young Demographer, European Society of Historical Demography, 2022
• Grand Union Doctoral Training Partnership Scholarship, Economic and Social Research Council (ESRC) and Nuffield College, Oxford, 2021–23
• Wilma Crowther Prize for Best Undergraduate Dissertation, Institute of Human Sciences, Oxford, 2021
• Demyship (highest undergraduate prize), Magdalen College, Oxford, 2020

Other employment

• Calleva Research Centre for Evolution and Human Science, University of Oxford
  • Administrative assistant, 2023–
• Magdalen College, University of Oxford
  • BA Human Sciences admissions interviewer, 2023
• Centre for Experimental Social Sciences, University of Oxford
  • Laboratory assistant, 2022–23

Service

• Positions
  • LSE Demography Seminar Series, Co-organiser, 2024–
  • Association of Young Historical Demographers, Board member, 2024–
  • GREATLEAP, Management Committee member, 2023–
  • Institute of Human Sciences, Oxford, Student representative, 2020
• Conference organisation
  • PopFest, Historical Demography strand co-organiser (2025)
  • European Social Science History Conference (ESSHC), Session organiser and discussant (2025)
  • British Society of Population Studies (BSPS), Session chair (2024, 2022 x 2)
• Peer review
  • Demography (2), International Journal of Epidemiology (1), Population Studies (1), Schizophrenia (1), Journal of Comparative Family Studies (1), Human Ecology (1), EcoHealth (1), Ethnobiology and Conservation (1), Czech Science Foundation (1)